Combating against wormhole attack in trust and energy aware secure routing protocol (TESRP) in wireless sensor network

This Wireless Sensor Network (WSN) has become very popular because of its so many practical applications in areas such as wild life, military, patient monitoring, Earthquake prediction, and fire detection etc. Because of its usage in these many applications security is an essential aspect. And since WSNs are resource constrained because of their small size, energy also need to be used efficiently. So because of this constrained nature of WSNs there is trade-off between Security and Energy. But due to this trade-off in WSN, designing of secure routing protocol for WSN is challenging issue. Many researches are being done on this issue. Cryptography based security approaches can't be used in WSN because they are heavy. Trust based secure routing protocols are good solution to this problem. This Paper enhances security of Trust and energy aware secure routing protocol (TESRP) by securing it against wormhole attack. TESRP is one of the best trust based protocol but this protocol does not provide security from wormhole attack. In this paper trust algorithm together with sequence number concept has been used for securing TESRP from wormhole attack.